TCP的C/S架构

TCP服务器的实现

监听的底层实现

func Listen(network, address string) (Listener, error) {
	var lc ListenConfig
	return lc.Listen(context.Background(), network, address)
}

type Listener interface {
	// Accept waits for and returns the next connection to the listener.
	Accept() (Conn, error)

	// Close closes the listener.
	// Any blocked Accept operations will be unblocked and return errors.
	Close() error

	// Addr returns the listener's network address.
	Addr() Addr
}

• 服务端阻塞等待客户端的连接
• 可以使用netcat工具对其进行测试
  

netcat下载地址netcat下载地址

TCP客户端的实现

package main

import (
	"fmt"
	"net"
)

func main() {
	//主动连接服务器
	conn, err := net.Dial("tcp", "127.0.0.1:8000")
	if err != nil {
		fmt.Println("err=", err)
		return
	}
	defer conn.Close()

	conn.Write([]byte("you ok?"))
}